ingenious

Of a person, displaying genius or brilliance; inventive.

This fellow is ingenious; he fixed a problem I didn’t even know I had.

Of a thing, characterized by genius; cleverly contrived or done.

That is an ingenious model of the atom.

Many ingenious lovely things are gone / That seemed sheer miracle to the multitude, / protected from the circle of the moon / That pitches common things about.

Showing originality or sagacity; witty.

He sent me an ingenious reply to an email.

I have scarcely recovered the surprise of the ingenious question, before I meet another surprise in the still more ingenious answer